/* ==========================================================================
   Kessler Station — instrument-grade HUD meets editorial
   ========================================================================== */

:root{
  --bg: #05070D;
  --panel: #0E1B2C;
  --panel-line: #1D3247;
  --green: #7DF9AA;
  --green-dim: #4C9E71;
  --red: #FF4747;
  --text: #DCE7EE;
  --muted: #9DB2C7;
  --muted-dim: #7089A5;

  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* modular type scale, ~1.25 ratio */
  --step--1: 0.8rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.563rem;
  --step-3: 1.953rem;
  --step-4: 2.441rem;
  --step-5: 3.052rem;
  --step-6: 3.815rem;

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1.25rem;
  --space-4: 2rem;
  --space-5: 3.25rem;
  --space-6: 5.25rem;
  --space-7: 8.5rem;

  --ease: cubic-bezier(.2,.6,.2,1);
  --topbar-h: 60px;
}

*, *::before, *::after{ box-sizing: border-box; }

html{
  background: var(--bg);
  color-scheme: dark;
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--step-0);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

p{ margin: 0; }

a{ color: inherit; }

::selection{
  background: var(--green);
  color: #05070D;
}

.skip-link{
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green);
  color: #05070D;
  padding: var(--space-2) var(--space-3);
  z-index: 200;
  font-family: var(--font-mono);
  font-size: var(--step--1);
}
.skip-link:focus{ left: var(--space-2); top: var(--space-2); }

:focus-visible{
  outline: 1.5px solid var(--green);
  outline-offset: 2px;
}

/* ---------- global overlays ---------- */

.vignette{
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 90;
  background: radial-gradient(ellipse at 50% 40%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

.scanlines{
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 91;
  opacity: 0.035;
  background: repeating-linear-gradient(
    to bottom,
    #fff 0px,
    #fff 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

/* ==========================================================================
   Top bar
   ========================================================================== */

.topbar{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  background: rgba(5,7,13,0.82);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--panel-line);
}

.topbar__brand{
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--green);
}

.topbar__mark{ display: flex; }

.topbar__name{
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--text);
}

.topbar__nav{
  display: flex;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.topbar__nav a{
  text-decoration: none;
  color: var(--muted);
  padding: var(--space-1) 0;
  border-bottom: 1px solid transparent;
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}
.topbar__nav a:hover,
.topbar__nav a:focus-visible{
  color: var(--green);
  border-color: var(--green);
}

.topbar__clock{
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.topbar__toggle{
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--panel-line);
  background: transparent;
  cursor: pointer;
}
.topbar__toggle span{
  display: block;
  width: 14px;
  height: 1px;
  margin: 0 auto;
  background: var(--muted);
  transition: transform 150ms var(--ease), opacity 150ms var(--ease), background 150ms var(--ease);
}
.topbar__toggle:hover span{ background: var(--green); }
.topbar__toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(5px) rotate(45deg); }
.topbar__toggle[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.topbar__toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-5px) rotate(-45deg); }

.dot{
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: blink 2s steps(1) infinite;
}
@keyframes blink{
  0%, 49%{ opacity: 1; }
  50%, 100%{ opacity: 0.25; }
}

/* ==========================================================================
   Hero / live sky map
   ========================================================================== */

.hero{
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
  padding-top: var(--topbar-h);
  overflow: hidden;
  border-bottom: 1px solid var(--panel-line);
}

#skymap{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero__frame{
  position: absolute;
  inset: var(--space-3);
  top: calc(var(--topbar-h) + var(--space-3));
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--green-dim);
}

.corner{ position: absolute; }
.corner i{ font-style: normal; white-space: nowrap; }
.corner--tl{ top: 0; left: 0; border-top: 1px solid var(--panel-line); border-left: 1px solid var(--panel-line); padding: var(--space-1) var(--space-2); }
.corner--tr{ top: 0; right: 0; border-top: 1px solid var(--panel-line); border-right: 1px solid var(--panel-line); padding: var(--space-1) var(--space-2); transition: border-color 150ms var(--ease); }
.corner--bl{ bottom: 0; left: 0; border-bottom: 1px solid var(--panel-line); border-left: 1px solid var(--panel-line); padding: var(--space-1) var(--space-2); }
.corner--br{ bottom: 0; right: 0; border-bottom: 1px solid var(--panel-line); border-right: 1px solid var(--panel-line); padding: var(--space-1) var(--space-2); }

.corner--tr i{ transition: color 150ms var(--ease); }
.corner--tr.is-locked{ border-color: var(--green); }
.corner--tr.is-locked i{ color: var(--green); }

.corner--tr i::after{
  content: '_';
  margin-left: 0.15em;
  color: var(--green-dim);
  animation: blink 1s steps(1) infinite;
}
.corner--tr.is-locked i::after{ animation: none; opacity: 0; }

.hero__legend{
  display: block;
  margin-top: 0.4rem;
  color: var(--muted-dim);
  white-space: nowrap;
}
.legend-chip{
  display: inline-block;
  width: 6px; height: 6px;
  margin-right: 0.3rem;
  margin-left: 0.7rem;
}
.legend-chip:first-child{ margin-left: 0; }
.legend-chip--active{ background: var(--green); border-radius: 50%; }
.legend-chip--debris{ background: var(--muted); border-radius: 50%; }
.legend-chip--body{ border: 1px solid var(--muted); }
.legend-chip--risk{ background: var(--red); border-radius: 50%; }

.hero__copy{
  position: relative;
  z-index: 2;
  max-width: 40rem;
  padding: var(--space-6) var(--space-4) 0;
  pointer-events: none;
}

.hero__kicker{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--green);
  margin-bottom: var(--space-2);
}

.hero__title{
  font-size: clamp(2.6rem, 6vw, var(--step-6));
  line-height: 1.02;
  color: var(--text);
  text-shadow: 0 0 24px rgba(5,7,13,0.9);
}

.hero__lede{
  margin-top: var(--space-3);
  max-width: 34rem;
  font-size: var(--step-1);
  color: var(--muted);
  text-shadow: 0 0 20px rgba(5,7,13,0.95);
}

.hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  pointer-events: auto;
}

.hero__cta{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.85rem var(--space-3);
  min-height: 44px;
  color: var(--bg);
  background: var(--green);
  border: 1px solid var(--green);
  transition: background 150ms var(--ease), color 150ms var(--ease);
}
.hero__cta:hover,
.hero__cta:focus-visible{
  background: var(--text);
  border-color: var(--text);
}

.hero__cta--ghost{
  color: var(--green);
  background: rgba(14,27,44,0.86);
  backdrop-filter: blur(3px);
  border-color: var(--panel-line);
}
.hero__cta--ghost:hover,
.hero__cta--ghost:focus-visible{
  color: var(--text);
  background: rgba(14,27,44,0.96);
  border-color: var(--green);
}

.hero__stats{
  position: relative;
  z-index: 2;
  display: flex;
  gap: 1px;
  background: var(--panel-line);
  border-top: 1px solid var(--panel-line);
  pointer-events: none;
}

.stat{
  flex: 1;
  background: rgba(14,27,44,0.86);
  backdrop-filter: blur(3px);
  padding: var(--space-3) var(--space-4);
}

.stat__value{
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.stat__value--flash{
  animation: statFlash 400ms steps(2, end);
}
@keyframes statFlash{
  0%{ color: var(--text); text-shadow: 0 0 12px var(--green); }
  100%{ color: var(--green); text-shadow: none; }
}

.stat__label{
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}

.hero__scrolldown{
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--muted-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  pointer-events: none;
}
.hero__scrolldown span{
  width: 1px; height: 22px;
  background: linear-gradient(to bottom, var(--green), transparent);
  animation: scrolldown 1.8s var(--ease) infinite;
}
@keyframes scrolldown{
  0%{ transform: scaleY(0); transform-origin: top; opacity: 0; }
  40%{ transform: scaleY(1); transform-origin: top; opacity: 1; }
  60%{ transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100%{ transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

.hero__tooltip{
  position: absolute;
  z-index: 5;
  background: rgba(5,7,13,0.94);
  border: 1px solid var(--green-dim);
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  pointer-events: none;
  min-width: 168px;
  transition: transform 150ms var(--ease);
}
.hero__tooltip[hidden]{ display: none; }

.tooltip__id{
  color: var(--green);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
  border-bottom: 1px solid var(--panel-line);
  padding-bottom: 0.3rem;
}

.tooltip__grid{
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.15rem 0.6rem;
  margin: 0;
}
.tooltip__grid dt{ color: var(--muted-dim); }
.tooltip__grid dd{ margin: 0; color: var(--muted); text-align: right; }

/* ==========================================================================
   shared section scaffolding
   ========================================================================== */

section{
  padding: var(--space-6) var(--space-4);
  max-width: 76rem;
  margin: 0 auto;
}

.section-head{
  max-width: 42rem;
  margin-bottom: var(--space-5);
}

.section-head__tag{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--green);
  margin-bottom: var(--space-2);
}

.section-head h2{
  font-size: var(--step-4);
  color: var(--text);
}

.section-head__lede{
  margin-top: var(--space-2);
  color: var(--muted);
  font-size: var(--step-0);
  max-width: 58ch;
}

.panel{
  background: var(--panel);
  border: 1px solid var(--panel-line);
}

/* ==========================================================================
   Census
   ========================================================================== */

.census__grid{
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-5);
  align-items: start;
}

.census__bars{
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.bar-row__label{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
  gap: var(--space-2);
}

.bar-row__name{
  font-family: var(--font-mono);
  font-size: var(--step-1);
  color: var(--text);
  font-weight: 700;
}

.bar-row__note{
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted-dim);
  text-align: right;
}

.bar-row__track{
  height: 10px;
  background: var(--panel);
  border: 1px solid var(--panel-line);
  position: relative;
  overflow: hidden;
}

.bar-row__fill{
  height: 100%;
  width: 0;
  background: linear-gradient(to right, var(--green-dim), var(--green));
  position: relative;
  transition: width 900ms var(--ease);
}
.bar-row__fill.is-revealed{ width: var(--pct); }
.bar-row__fill::after{
  content: '';
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    to right, transparent 0 8px, rgba(5,7,13,0.35) 8px 9px
  );
}

.bar-row__count{
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.census__caption{
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--panel-line);
  font-size: 0.8rem;
  color: var(--muted-dim);
  max-width: 48ch;
}

.census__notes{
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.note-panel{ padding: var(--space-3); }

.note-panel__label{
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: var(--space-2);
}

.note-panel__list{
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.note-panel__list li span{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted-dim);
  margin-right: 0.5rem;
}

.note-panel--alert{
  border-color: rgba(255,71,71,0.35);
}
.note-panel--alert .note-panel__label{ color: var(--red); }
.note-panel__body{
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ==========================================================================
   Advisories log
   ========================================================================== */

.log-panel{
  border: 1px solid var(--panel-line);
  background: var(--panel);
}

.log-panel__head{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--panel-line);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--muted-dim);
}

.log-panel__head-right{
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.log-panel__legend{
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.log-panel__pause{
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  color: var(--muted-dim);
  background: transparent;
  border: 1px solid var(--panel-line);
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}
.log-panel__pause:hover{ color: var(--green); border-color: var(--green-dim); }
.log-panel__pause[aria-pressed="true"]{ color: var(--green); border-color: var(--green); }

.legend-dot{
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  margin-right: 0.35rem;
}
.legend-dot--crit{ background: var(--red); box-shadow: 0 0 5px var(--red); }
.legend-dot--warn{ background: var(--green); box-shadow: 0 0 5px var(--green); }
.legend-dot--info{ background: var(--muted-dim); }

.log-panel__viewport{
  height: 340px;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(to bottom, transparent, black 24px, black calc(100% - 24px), transparent);
}

.log-feed{
  list-style: none;
  margin: 0;
  padding: var(--space-2) 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  animation: feedScroll 42s linear infinite;
}
.log-panel__viewport:hover .log-feed,
.log-panel__viewport.is-paused .log-feed{ animation-play-state: paused; }

@keyframes feedScroll{
  0%{ transform: translateY(0); }
  100%{ transform: translateY(-50%); }
}

.log-line{
  display: grid;
  grid-template-columns: 12ch 5.5rem 1fr auto;
  gap: var(--space-2);
  padding: 0.5rem var(--space-3);
  border-bottom: 1px solid rgba(29,50,71,0.5);
  color: var(--muted);
  align-items: baseline;
}
.log-line__time{ white-space: nowrap; }

.log-line__time{ color: var(--muted-dim); }
.log-line__sev{
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.log-line--critical .log-line__sev{ color: var(--red); }
.log-line--monitor .log-line__sev{ color: var(--green); }
.log-line--info .log-line__sev{ color: var(--muted-dim); }

.log-line__msg{ color: var(--text); }
.log-line__pc{ text-align: right; color: var(--muted-dim); white-space: nowrap; }

/* ==========================================================================
   Station nodes
   ========================================================================== */

.nodes{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--panel-line);
  border: 1px solid var(--panel-line);
}

.node-card{
  padding: var(--space-3);
  border: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.node-card__head{
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.node-card__id{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--green);
}

.node-card__status{
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.5rem;
  border: 1px solid currentColor;
}
.node-card__status--nominal{ color: var(--green); }
.node-card__status--degraded{ color: var(--red); }

.node-card h3{
  font-size: var(--step-2);
  color: var(--text);
}

.node-card__coords{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted-dim);
}

.node-card__desc{
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
  flex-grow: 1;
}

.node-card__specs{
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--panel-line);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.node-card__specs div{
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.68rem;
}
.node-card__specs dt{ color: var(--muted-dim); }
.node-card__specs dd{ margin: 0; color: var(--muted); }

/* ==========================================================================
   Data access
   ========================================================================== */

.access__grid{
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-4);
  align-items: start;
}
.access__grid > *{ min-width: 0; }

.access__tiers{
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--panel-line);
  border: 1px solid var(--panel-line);
}

.tier{
  padding: var(--space-3);
  border: none;
}
.tier--featured{
  background: #10202f;
  box-shadow: inset 2px 0 0 var(--green);
}

.tier__name{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: 0.3rem;
}
.tier__price{
  font-size: var(--step-1);
  color: var(--text);
  margin-bottom: 0.5rem;
}
.tier__desc{
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.55;
  max-width: 45ch;
}
.tier__rate{
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted-dim);
}

.access__api{
  padding: var(--space-3);
}
.access__api-label{
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted-dim);
  margin-bottom: var(--space-2);
}
.access__code{
  margin: 0;
  padding: var(--space-2);
  background: var(--bg);
  border: 1px solid var(--panel-line);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--muted);
}
.access__code code{ font-family: inherit; }

.access__code.is-scrollable{
  mask-image: linear-gradient(to right, black calc(100% - 28px), transparent);
  -webkit-mask-image: linear-gradient(to right, black calc(100% - 28px), transparent);
}

.access__cta{
  display: inline-block;
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid var(--green-dim);
  padding-bottom: 0.15rem;
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}
.access__cta:hover,
.access__cta:focus-visible{
  color: var(--text);
  border-color: var(--green);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer{
  max-width: 76rem;
  margin: 0 auto;
  padding: var(--space-4);
  border-top: 1px solid var(--panel-line);
}

.site-footer__row{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-bottom: var(--space-3);
}

.site-footer__brand{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--text);
}
.site-footer__addr{
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted-dim);
}

.site-footer__links{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}
.site-footer__links a{
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 150ms var(--ease);
}
.site-footer__links a:hover,
.site-footer__links a:focus-visible{ color: var(--green); }

.site-footer__legal{
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted-dim);
  border-top: 1px solid var(--panel-line);
  padding-top: var(--space-2);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px){
  :root{ --topbar-h: 70px; }

  .hero__legend{ display: none; }

  .topbar__toggle{ display: flex; }

  .topbar__nav{
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    gap: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--panel-line);
    padding: var(--space-2) var(--space-4);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 150ms var(--ease), transform 150ms var(--ease), visibility 150ms;
  }
  .topbar__nav.is-open{
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }
  .topbar__nav a{
    display: block;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--panel-line);
  }
  .topbar__nav a:last-child{ border-bottom: none; }

  .census__grid,
  .access__grid{
    grid-template-columns: 1fr;
  }

  .nodes{ grid-template-columns: 1fr; }

  .hero__stats{ flex-wrap: wrap; }
  .stat{ min-width: 50%; }

  section{ padding: var(--space-5) var(--space-3); }
}

@media (max-width: 560px){
  .topbar{ padding: var(--space-2) var(--space-3); }
  .topbar__name{ display: none; }

  .hero__frame{ display: none; }

  .hero__title{ font-size: clamp(2.1rem, 10vw, 3rem); }
  .hero__copy{ padding: var(--space-5) var(--space-3) var(--space-4); }

  .hero__actions{ gap: var(--space-2); }
  .hero__cta{ flex: 1 1 100%; text-align: center; }

  .stat{ min-width: 100%; }
  .stat__value{ font-size: var(--step-3); }

  .log-line{ grid-template-columns: 1fr; gap: 0.15rem; }
  .log-line__pc{ text-align: left; }

  .log-panel__head{ flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .log-panel__head-right{ flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .log-panel__legend{ gap: var(--space-2); flex-wrap: wrap; }

  .hero__tooltip{ display: none; }
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce){
  .dot{ animation: none; opacity: 1; }
  .hero__scrolldown span{ animation: none; }
  .log-feed{ animation: none; }
  .hero__tooltip{ transition: none; }
  .access__cta,
  .topbar__nav,
  .topbar__nav a,
  .topbar__toggle span,
  .site-footer__links a{ transition: none; }
  .stat__value--flash{ animation: none; }
  .corner--tr,
  .corner--tr i{ transition: none; }
  .corner--tr i::after{ animation: none; }
  .bar-row__fill{ transition: none; }
}